Discription:10pcs 30mm Diamond Grinding Wheel Slice with Two 3mm Shank Mandrels for Dremel Rotary Tools<br>Specification:Material: DiamondWheel Diameter: 30mmRod Shank Diameter: 3mmMax Speed : 20，000 RPMGrit : 80<br>Features:Made of powder alloy hot forming， high hardness， abrasion resistance， good impact resistance and longer life.It's dry wet amphibious，small slot and high shapeness.Ideal for cutting all kinds of metal， gem， jade， ect.<br>Note:To improve the service life，please add water for coolant when using diamond tools.<br>Package Included:10x Grinding Slice2x Rod<br>     Detail Pictures: